Does anyone know or can tell me how to find angle at transom

[TheOtherLine]

on a 2006 2520 scxl?

I mounted a transom mount transducer there and it's not working well so now I have to check each little potential issue. I mounted mine assuming that the rise at the transom was between 11-16 degrees and now I'm not sure.

 

[JC]

This can be done mathematically however a "Protractor" will simplify the process to reveal the angle.

 

[TheOtherLine]

a "Protractor" will simplify the process to reveal the angle.

Yes, I know but I didn't use one when I had the boat out of the water to install the transducer. Now I'm trying to troubleshoot without having to haul it out again. I don't have a trailer and I can't measure it by hanging over the edge of the motor bracket.....

 

[Outta Here]

From memory...The ducer should be at least 1/8" below hull on shallow side (deeper side will be further below hull). Back of ducer should tilt foreward about 1/8". Ducer should be perpendicular to water, not boat hull.

Deadrise doesn't matter in positioning ducer. Only reason I brought it up earlier was to point out transom ducers don't work good on deep V's (which you know you don't have). If you set it deep enough on shallow side, the deep side is 1/2" under water and throws out a tremendous wake.

 

[TheOtherLine]

Fish,

Apparently Airmar thinks angle does matter. I thought the same thing you did. See page 3.



http://www.airmartechnology.com/uploads ... 404-01.pdf

 

[Principal Reeler]

I can't remember where I copied this from, but the result came damn close to the angle that Robin@Parker told me my 1992 MV 2310 was supposed to be.

Measuring angles wasn't my favorite part of geometry :roll:, so my measuring probably could've been more precise :wink:. Good luck !

Mac

"Imagine a right triangle...draw a horizontal line just above the keel at the widest part of the stern, then a vertical line halfway betreen port and starboard. Then, measure the angle between it and the leg of the triangle running down to the keel. This is the measurent of the deadrise angle, not the angle of the V."

 

[TheOtherLine]

OK. I did it the easy way. I called Parker.

The answer is 17 degrees. The angle at the transom of a 2006 2520 XL mod v, not the deep v xld, is 17 degrees.